小米椒生物力学特性试验研究  

Experimental Study on the Biomechanical Characteristics of Millet Pepper

作　　者：张善文[1] 孙永元 张永吉[2] 戴敏[1] 缪宏[1] 张燕军[1] 高吉成[1] Zhang Shanwen;Sun Yongyuan;Zhang Yongji;Dai Min;Miao Hong;Zhang Yanjun;Gao Jicheng(College of Mechanical Engineering,Yangzhou University,Yangzhou 225009,China;Agricultural Science Research Institute of Lixiahe Region,Yangzhou 225007,China)

机构地区：[1]扬州大学机械工程学院,江苏扬州225009 [2]江苏里下河地区农业科学研究所,江苏扬州225007

出　　处：《农机化研究》2025年第4期151-159,共9页Journal of Agricultural Mechanization Research

基　　金：江苏省政策引导类计划(国际科技合作/港澳台科技合作)-政府间双边创新合作项目(BZ2021079);江苏省农业科技自主创新资金项目(CX(20)1005,CX(20)2016);江苏省重点研发计划项目(现代农业)(BE2020399,BE2021330);国家特色蔬菜产业技术体系机械化研究室智能技术应用项目(CARS-24-D-03);教育部高等教育司产学合作协同育人项目(202102363026);2022年江苏省研究生科研创新计划与扬州大学研究生科研与实践创新计划项目(KYCX22_3478)。

摘　　要：为了提升小米椒的机械化收获质量和效率,对小米椒的物理及力学特性进行了试验测量。通过测量,小米椒在15天内的含水率为86%~90%,且中部最高、首部次之、尾部最低。通过拉伸试验,确定小米椒断裂时的抗拉强度为0.679 MPa±0.03 MPa。采用正交旋转组合设计方法,确定了加载速度对抗压强度的影响极显著,小米椒直径对抗压强度的影响显著,加载速度对剪切强度的影响显著。通过轴向压缩和剪切试验,确定了小米椒首部的抗压强度平均值为0.62 MPa,弹性模量平均值为2.72 MPa;中部抗压强度平均值为0.64 MPa,弹性模量平均值为3.17 MPa;尾部抗压强度平均值为0.61 MPa,弹性模量平均值为2.64 MPa,小米椒剪切强度平均值为0.32 MPa。To improve the quality and efficiency of mechanized harvesting of millet pepper,experimental measurements were conducted on the physical and mechanical properties of millet pepper.According to measurement,the water content of millet pepper within 15 days was 86%-90%,with the highest in the middle,followed by the head,and the lowest in the tail.Through tensile tests,the tensile strength of millet pepper was 0.679 MPa±0.03 MPa,when it was broken.Using the orthogonal rotation combination design method,the impact of loading speed on compressive strength was extremely significant,the impact of millet pepper diameter on compressive strength was significant,and the impact of loading speed on shear strength was significant.Through axial compression and shear tests,the average compressive strength and elastic modulus of the head of millet pepper were 0.62 MPa and 2.72 MPa.respectively;The average compressive strength in the middle was 0.64 MPa,and the average elastic modulus was 3.17 MPa.The average compressive strength of the tail was 0.61 MPa,and the average elastic modulus was 2.64 MPa.The average shear strength of millet pepper was 0.32 MPa.

关 键 词：小米椒 力学特性 物理特性 

分 类 号：S183[农业科学—农业基础科学] S233.75